Content filtering by subnet

[John2]

Is it possible to apply different content filtering policies / rules to different subnets? I know you can apply them to vlans local to the MX, but we are wondering does anyone know how to apply it to subnets which would be behind a L3 core. 

[mmmmmmark]

In Network-wide --> Group polices you can create a group policy and apply it to whatever devices you want. The only thing is that devices can currently only be in one group policy at a time. Here's the doc on group policies

[PhilipDAth]

The approach by @mmmmmmark is the only one I can think of.  Other than that, by VLAN as you have already noted.

[John2]

Yes I also know you can apply it to devices, but I was wondering if anyone knew if it was possible to apply it to a whole subnet.